[Insight-users] Re : Re : how to reduce a size of a dicom serie 3D

[Syrine Sahmim]

hi luis,
it's a 3D MRA tof dicom image of brain vessels.
Regards
Syrine





________________________________
De : Luis Ibanez <luis.ibanez at kitware.com>
À : Syrine Sahmim <syrine.sahmim at yahoo.fr>
Cc : Xabier Artaechevarria <xabiarta at unav.es>; insight-users at itk.org
Envoyé le : Lun 16 Novembre 2009, 0 h 39 min 14 s
Objet : Re: [Insight-users] Re : how to reduce a size of a dicom serie 3D

Hi Syrine,


1) What is the content of your DICOM image ?

    Is it a CT scan of the brain ?
    Is it a MRI of the abdomen ?
    Could you post a screenshot of it to a public web site ?

Please let us know,

----

If you need to reduce the memory footprint of the image,

    the typical options are:

A) Subsample the image (as Xabier suggested)

B) Crop the image (by using the RegionOfInterestImageFilter)
     and focus on the internal rectangular block of the image
     that contains the anatomy of interest.

C) Change the pixel type of the image.
     (e.g. if you had PET in float, you could scale it to
      shorts).   This last one is in general a bad option,
     given that it is very easy to lose important information


Once you answer question (1) above , we will be able to
give you more useful advice.


      Regards,


           Luis


---------------------------------------------------------------------------------------------
On Sun, Nov 15, 2009 at 3:28 PM, Syrine Sahmim <syrine.sahmim at yahoo.fr> wrote:
>
> hi,
> if we try to use this filter or any other method to reduce the size of dicom
> volume. we will lose the quality of the dicom volume because we will
> eliminate some voxels. My problem is how to do to reduce the volume without
> modifying the quality of data. Can i choos some slices randomly from the
> dicom seroies that i have and eliminate others to test it on matlab and then
> on itk or vtk
> Regards
> Syrine
> ________________________________
> De : Xabier Artaechevarria <xabiarta at unav.es>
> À : Syrine Sahmim <syrine.sahmim at yahoo.fr>
> Cc : insight-users at itk.org
> Envoyé le : Ven 13 Novembre 2009, 11 h 38 min 42 s
> Objet : Re: [Insight-users] how to reduce a size of a dicom serie 3D
>
> Hi Syrine,
>
> you can try this ITK filter:
>
> http://www.itk.org/Doxygen/html/classitk_1_1ShrinkImageFilter.html
>
> Regards,
> Xabier
>
> 2009/11/13 Syrine Sahmim <syrine.sahmim at yahoo.fr>
>>
>> Hi,
>>
>> I'm testing a code on matlab to see the result before doing it on itk or
>> vtk.the error i have is a warning "out of memory". So i guess that i have to
>> reduce the size of the dicom serie 3D that i use. I tried on matlab the
>> imresize function but there are some problem with it.
>> If someone tells me  how to do it on itk or vtk or even matlab.
>> Thank you
>>
>> Regards
>> syrine
>>



      
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